NSO Level 1- Science Olympiad (SOF) Class 8: Questions 966 - 970 of 1076

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Question number: 966

» Chemical Effects of Electric Current

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MCQ▾

Question

Which of the following can be a chemical effect of electric current?

Choices

Choice (4) Response

a.

Change in colour of solution

b.

Formation of gas bubbles at the electrodes

c.

Deposition of metal on electrodes

d.

All a. , b. and c. are correct

Question number: 967

» Light

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Appeared in Year: 2012

MCQ▾

Question

Taking one light year equal to and one day equal to , what will be the speed of light in light year per day if the speed of light in is ?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 968

» Chemical Effects of Electric Current

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MCQ▾

Question

Glowing of a bulb shows

Choices

Choice (4) Response

a.

Light effect of electric current

b.

Heating effect of electric current

c.

Chemical effect of electric current

d.

Sound effect of electric current

Question number: 969

» Chemical Effects of Electric Current

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MCQ▾

Question

Nowadays, tungsten filament bulbs are replaced by LED bulbs. The reason is

Choices

Choice (4) Response

a.

LED bulbs are much cheaper than tungsten bulbs.

b.

Tungsten is a costly metal and has high resistance.

c.

The filament of LED bulbs do not require much temperature to glow.

d.

All a. , b. and c. are correct

Question number: 970

» Stars and Solar System

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Appeared in Year: 2012

MCQ▾

Question

Which of the following planets can be seen with naked eye?

Choices

Choice (4) Response

a.

Mercury, Venus, Uranus, Neptune

b.

Mercury, Venus, Mars, Jupiter

c.

Mars, Jupiter, Uranus, Neptune

d.

Mercury, Mars, Jupiter, Neptune

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